SH3100IMTR SEMTECH [Semtech Corporation], SH3100IMTR Datasheet - Page 44

• Manufacturer Part Number: SH3100IMTR
• Description: Supervisory IC with I2C Interface and PWM
• Manufacturer: SEMTECH [Semtech Corporation]

© 2006 Semtech Corp.
POWER MANAGEMENT
Register Descriptions
Register Name WriteProtects
Address(hex): 49
Bit No.
Bit 7
[4]
[2]
[1]
[0]
Description
XtalTrimWP
Calibration fuse WP
THIS REGISTER IS FUSE
INITIALIZED
App-specific fuse WP
THIS REGISTER IS FUSE
INITIALIZED
ResetThresholdWP
Bit 6
(continued)
Bit 5
Description
Xtal Trim WP
Bit Value
Bit 4
0
1
0
1
0
1
0
1
44
(R/W) Write-protects.
Value Description
The XtalTrim register can be written immediately after clearing
this bit, whereafter this flag reverts to 1
The XtalTrim register can not be written
The calibration fuses and registers can be changed
The calibration fuses and registers can not be changed
Calibration registers include:
Int32kCoarseTrim
Int32kFineTrim
BGCode
TempTrim
The application-specific fuses and registers can be changed
The application-specific fuses and registers can not be changed
Application-specific registers include:
CLK0PostScaler
CLK1PostScaler
SSEnable
SSConfig
FLLDivideRatio
XtalTrim
I2CSlaveAddr
DeviceMode
ResetDuration
DACLevel
DCOCode
CLK1En
CLK1Supply
InvertCLK1
CLK1 HF/LF
The ResetThreshold fuses and register can be changed
The ResetThreshold fuses and register can not be changed
Bit 3
Cal Fuse WP
Bit 2
Default Value: 0001 0000
Reset Event: P (bit 4)
Reset Event: P, W (bits 2:0)
App-specific
Fuse WP
Bit 1
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ResetThresh
SH3100
Bit 0
WP